ArticleClinical pathology (Thousand Oaks, Ventura County, Calif.)
Is the Presence of Helicobacter Pylori in the Colonic Mucosa, Provocative of Activity in Ulcerative Colitis?
Article in Clinical pathology (Thousand Oaks, Ventura County, Calif.). The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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6 authors at 2 institutions in 1 country.
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Abstract
Background: Epidemiologic studies have shown world-wide increasing incidence of ulcerative colitis (UC) as an autoimmune disease of intestine. In the meantime, gastrointestinal H. Pylori infection is being decreased. Objectives: There are very few studies about comparing the presence of H. Pylori in the colon and the disease activity of UC. There is no study form Iran. In this study, we tried to investigate the presence of H. Pylori in the mucosa of colon by molecular and microbiological as well as pathological methods to find any association between the presence of this organism in the colon and the presence and activity of UC. Patients and Methods: In 100 patients who referred to colonoscopy clinic, colonoscopy was performed. Fifty-seven patients with the new diagnosis of UC were considered as cases and 43 patients with normal screening colonoscopy for polyps were considered as controls. Colon biopsies were evaluated according to histopathology, clinical findings, and laboratory results to confirm the diagnosis and the degree of activity in the cases of UC. Molecular studies were also performed to evaluate the presence of H. Pylori genome in the colon biopsies. A sample of colon was also cultured for H. Pylori. ELISA test was performed in a sample of blood to evaluate the level of IL-10 and IL-17 as regulatory cytokines of inflammation. Results: Cases with the diagnosis of UC showed significantly higher number of positive colonic H. Pylori comparing to normal colonic mucosa. Also, the presence of H. Pylori genome in the colon was associated with higher activity in the cases with UC and higher levels of inflammatory mediators especially IL17 and lower levels of inhibitory mediators such as IL-10. Conclusion: Colonic colonization of H. Pylori was higher in the patients with UC and higher activity of this disease comparing with normal control colonic mucosa.
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